Lever hoist
Its main features are:
1. Advanced structure, the use of safe, reliable and durable.
2. High efficiency, easy operation and comfortable.
3. Small size, light weight, easy to carry.
This product is suitable for factories, mines, construction sites, docks, transportation and other occasions, equipment installation, cargo lifting, stationary objects, the ideal tool for lashing and traction, especially in traction at any angle and in small venues, open jobs and No power in the case, but also demonstrate its superiority.
Chain lever hoist features:
? All for structural steel
? Grade alloy chain
? All for gears
? Gear and the rotation of the shaft part has a bearing or sleeve
? Product surface after spray treatment
? Professional alloy hook to meet the product overload
? Products can meet 150% of rated load weight
Wire rope pulling hoist:
Wire rope pulling hoist, also known as rope pulling machine. Is a new, efficient, safe and durable lifting products, with lifting, pulling, tensioning three functions, the whole structure, reasonable design, high safety factor, long life, especially for field with no power source next.
The aircraft quality aluminum chassis Chain Block made of high strength die-casting, supporting the use of wire rope with a particularly high breaking force and abrasion resistance, according to customer needs configuration phase for the rope length. Mainly give to 800 kg, 1600 kg and 3200 kg.
This product is the aim of our quality-oriented, honest to the letter. The company has many years of experience in international trade, and timely product delivery, reliable quality, reasonable prices, good service, at home and abroad customers. We sincerely welcome all people, patrons.
strong electric winch
2013年11月22日星期五
2013年8月29日星期四
Mini electric hoist motor technology requirements
Motor most lifting equipment is the most important step, mini electric hoist motor is one of the technical requirements of this standard shall comply with the requirements in accordance with prescribed procedures approved manufacturing drawings and technical documents.hoist equipment Motor used under the following operating conditions, should be able to ensure proper operation.
The following details.
1, using the site altitude does not exceed 1000m.
2, the highest place of use of ambient air temperature changes with the seasons, but generally does not exceed 40 ℃.
3, the lowest place of use ambient air temperature is -25 ℃.
4, the wettest month of the monthly mean maximum relative humidity of 90%, while the average minimum temperature in January is not higher than 25 ℃.chain block Motor with class F insulation, when the altitude and the ambient air temperature meet the requirements of 1 and 2, the motor winding temperature rise should not exceed 105K, bearing allowable temperature should not exceed 95 ℃.
Mini electric lever hoist lifting the rated load, the motor terminal voltage is the rated voltage 90%, to ensure that all agencies can work, for conical rotor motor and disc brake motor and a residual magnetic pull. When the three-phase power balance, the three-phase motor load current in any one phase and three-phase average deviation should not exceed ± 10% of the average three-phase motor rated power and rated the reference voltage, the stall torque , respectively, the maximum torque rated torque ratio should not be less than the guaranteed values specified in Table 2.
2013年8月28日星期三
Explosion-proof electric hoist to see trends
With the lifting of the continuous development of the electric
rope hoist increasingly stringent requirements, and in many gourd products which, especially in the explosion-proof electric hoist the most widely used because of its safety performance determines its scope of use. With you to see the domestic electric hoist trends.
Domestic electric hoist is to copy the form from the last century began production and development. July 1949 Beijing General Machinery Plant imitation German first successful trial proof electric hoist, and put into small batch production, 1953 Beijing imitation electric hoist plant trial of the former Soviet Union gourd general purpose proof electric hoist to hoist as lifting mechanism electric single-girder electric lever hoist , since then, the domestic electric hoist equipment to Beijing production plant mimic the former Soviet Union as the earliest single girder truss electric hoist, electric hoist factory in 1957, Beijing and Shanghai electric hoist manufacturers combined production drawings to be modified to produce the latest generation of explosion-proof electric hoist products.
As China's economy continues to develop and progress of science and technology, a new generation of explosion-proof electric gourd endless factory is a research and development design, precision manufacturing,chain block import and export trade, the net sales as one of professional manufacturer of lifting machinery, in the years of electric hoist production of which, we continue to accumulate experience, absorb advanced technology, to create a generation after generation of explosion-proof electric hoist good product.
Electric hoist through the current trends, boldly predicted that in the next few years, explosion-proof hoist equipment electric hoist will be towards a more intelligent and automated direction, its efficiency will be more high quality will be more exquisite.
Domestic electric hoist is to copy the form from the last century began production and development. July 1949 Beijing General Machinery Plant imitation German first successful trial proof electric hoist, and put into small batch production, 1953 Beijing imitation electric hoist plant trial of the former Soviet Union gourd general purpose proof electric hoist to hoist as lifting mechanism electric single-girder electric lever hoist , since then, the domestic electric hoist equipment to Beijing production plant mimic the former Soviet Union as the earliest single girder truss electric hoist, electric hoist factory in 1957, Beijing and Shanghai electric hoist manufacturers combined production drawings to be modified to produce the latest generation of explosion-proof electric hoist products.
As China's economy continues to develop and progress of science and technology, a new generation of explosion-proof electric gourd endless factory is a research and development design, precision manufacturing,chain block import and export trade, the net sales as one of professional manufacturer of lifting machinery, in the years of electric hoist production of which, we continue to accumulate experience, absorb advanced technology, to create a generation after generation of explosion-proof electric hoist good product.
Electric hoist through the current trends, boldly predicted that in the next few years, explosion-proof hoist equipment electric hoist will be towards a more intelligent and automated direction, its efficiency will be more high quality will be more exquisite.
2013年8月26日星期一
Avoid overloading hoists commissioning and corrosion protection
Chain hoists and other lifting equipment, while prohibiting overloading used, but overloading phenomenon still exists, due to overloading caused by the use of lifting incidents have also occurred, in order to avoid overloading
chain block , so to limit the development of the debugger, but the debugger , some matters should pay special attention.
(1) To simplify the debugging process to improve numerical accuracy, debugging using electronic crane, chain hoist in the specification more weights can simplify the configuration;
(2) run-in phase should focus on before the whole assembly, if the conditions can be configured ergometer, positioning device, control system established to reduce the work running test bench strength improve work efficiency;
(3) hoists the load limit load debugging adopted, try to set a different interval, the same specifications used when debugging the load slightly larger slip values;
(4) load limit not a substitute for manual hoist factory debugging dynamic load test, because two persons emphases and different ways, and load requirements are not the same.
Based on the above considerations debugging load limit chain hoists, hoist load limit can greatly improve the accuracy and stability.
Rust-proof chain hoists work is essential, not only affects the overall appearance of the gourd with a great influence on the future use, chain hoists antirust measures described below:
(1) chain hoist hook bearing, to inject calcium-based anti-rust grease to rust.
(2) the various parts of the body lever hoist the machined surface of an exposed table exposed threaded surface, painted barracks or other calcium-based grease rust rust grease.
(3) chain hoists body gear box, gear should be coated with anti-rust grease oil barium sulfate, and shall be regularly inspected corroded and protection. Such as rust, chip or bamboo hardwood hang required to re-rust oil coating.
(1) To simplify the debugging process to improve numerical accuracy, debugging using electronic crane, chain hoist in the specification more weights can simplify the configuration;
(2) run-in phase should focus on before the whole assembly, if the conditions can be configured ergometer, positioning device, control system established to reduce the work running test bench strength improve work efficiency;
(3) hoists the load limit load debugging adopted, try to set a different interval, the same specifications used when debugging the load slightly larger slip values;
(4) load limit not a substitute for manual hoist factory debugging dynamic load test, because two persons emphases and different ways, and load requirements are not the same.
Based on the above considerations debugging load limit chain hoists, hoist load limit can greatly improve the accuracy and stability.
Rust-proof chain hoists work is essential, not only affects the overall appearance of the gourd with a great influence on the future use, chain hoists antirust measures described below:
(1) chain hoist hook bearing, to inject calcium-based anti-rust grease to rust.
(2) the various parts of the body lever hoist the machined surface of an exposed table exposed threaded surface, painted barracks or other calcium-based grease rust rust grease.
(3) chain hoists body gear box, gear should be coated with anti-rust grease oil barium sulfate, and shall be regularly inspected corroded and protection. Such as rust, chip or bamboo hardwood hang required to re-rust oil coating.
Electric hoist startup procedure describes
Electric hoist startup process is measured from power,hoist and trolley the rotor speed is increased from zero to the rated value in the process, according to the characteristics of the DC electric hoist, it is commonly used in start-up mode with full pressure start, the string into the start-up and step-down start rheostat three.
Electric hoist hanging objects running in conditions permitting, the best hanging around 0.5m from the ground, by professionals in the electric hoist hanging objects help steady the object behind and around obstacles under the command runs. Do not run electric hoist intermittent,load chain long-distance running, it is best to send electricity long run as well. Electric hoist hanging objects should be to ensure the smooth running, electric hoist if hanging objects swing or jitter, should be running side edges steady running hook, not let it shake or swing.
When the armature windings of electric hoist power, its current rapid rise, resulting in startup counter, driven rotor and counter electromotive force generated, with the rise of the rotor speed,chain block back EMF increases, the armature current decreases, start switch cabinet down, the rotor speed increases slowly when starting electric hoist with load counters counters equal to regional stability, speed, start over.
Electric hoist hanging objects running in conditions permitting, the best hanging around 0.5m from the ground, by professionals in the electric hoist hanging objects help steady the object behind and around obstacles under the command runs. Do not run electric hoist intermittent,load chain long-distance running, it is best to send electricity long run as well. Electric hoist hanging objects should be to ensure the smooth running, electric hoist if hanging objects swing or jitter, should be running side edges steady running hook, not let it shake or swing.
When the armature windings of electric hoist power, its current rapid rise, resulting in startup counter, driven rotor and counter electromotive force generated, with the rise of the rotor speed,chain block back EMF increases, the armature current decreases, start switch cabinet down, the rotor speed increases slowly when starting electric hoist with load counters counters equal to regional stability, speed, start over.
Chain lifting mechanism and working principle
chain Block are widely used in industrial and mining enterprises, warehouses, commercial, medical and food service areas, elevator can be installed in the floating beams, curved rails, and fixed lifting heavy objects can also be installed in a cantilever crane rails, workpiece and the machine tool fixtures, etc. lifting heavy objects and so on.
Lifting mechanism by the lifting chain sprocket, chain and chain guide frame device component. Chain of imported and domestic materials are high-strength alloy steel, made by the introduction of advanced equipment chain professional factory steel and heat treated, high strength,wire rope winch good wear resistance.
Electric hoist chain through chain guide device, sprocket engages smoothly and reliably, the chain can be promoted successfully stored in a box set of chains, which have anti-pollution requirements and clean workplace is very suitable, such as hygiene and food service areas.
Sets electric manual hoist and chain hoists on the merits, it is powered motor with disc brake, planetary gear reducer, compact structure, small size, light weight, high efficiency, reliable braking, easy maintenance, etc. , versatility, is to improve working conditions, improve labor productivity, ideal for lifting gear.
Lifting mechanism by the lifting chain sprocket, chain and chain guide frame device component. Chain of imported and domestic materials are high-strength alloy steel, made by the introduction of advanced equipment chain professional factory steel and heat treated, high strength,wire rope winch good wear resistance.
Electric hoist chain through chain guide device, sprocket engages smoothly and reliably, the chain can be promoted successfully stored in a box set of chains, which have anti-pollution requirements and clean workplace is very suitable, such as hygiene and food service areas.
Sets electric manual hoist and chain hoists on the merits, it is powered motor with disc brake, planetary gear reducer, compact structure, small size, light weight, high efficiency, reliable braking, easy maintenance, etc. , versatility, is to improve working conditions, improve labor productivity, ideal for lifting gear.
2013年8月23日星期五
People often mention electric hoist lifting height is?
Many procurement officers in the inquiry of the product due to electric hoist is not very understanding,rope hoist when the sales staff asked to lifting height and other professional problem is bewildered, and today the purchase of electric hoist often asked questions "electric hoist lifting height What specifically refers to the distance between "doing the following answers for your reference:
Mentioned electric hoist lifting height h,lever hoist in fact, refers to a hook at the bottom of the orbit distance from the lowest point fall, some electric hoist extract device down on the ground or track below the top surface, the interval is called drop its decentralized depth. Then hoist in actual use, shall not exceed the lifting height.
Wire rope electric hoist lifting hook height is the upper limit position and the distance between the lower limit position,chain block and by adjusting the vertical stroke protection off the fire stopper can change the hoist lifting height.
Mentioned electric hoist lifting height h,lever hoist in fact, refers to a hook at the bottom of the orbit distance from the lowest point fall, some electric hoist extract device down on the ground or track below the top surface, the interval is called drop its decentralized depth. Then hoist in actual use, shall not exceed the lifting height.
Wire rope electric hoist lifting hook height is the upper limit position and the distance between the lower limit position,chain block and by adjusting the vertical stroke protection off the fire stopper can change the hoist lifting height.
2013年8月21日星期三
How to select the right chain hoists
In recent years, low-quality
chain Block gradually increased, mainly due to the number of small enterprises in order to reduce costs, thereby reducing the production of investment goods, most chain hoists accessories are used with external processing or production chain hoists used equipment parts assembled, reduced parts of the standard size, material, lifting chain welding surface treatment, low-cost chain hoists to be produced without any guarantee of quality, of course.
Remind you to buy before the manual hoist must check the packaging, production date, gourd material degree and product shelf life and so on. The contract must be signed by both parties save. Here's how to select the right chain hoists, for your reference:
1, in normal use, the hand chain hoists chain will be stuck.
2, the normal use chain hoists lifting heavy objects will appear downturn.
3, the use of chain hoists lifting heavy objects can not only occur when the next situation.
4, when the upper and lower hook plates,lever hoist severe deformation does not work, can not guarantee things will not be hanging slip hook.
5, in the safe use of load chain hoists, chains, hooks and other load bearing parts may deform or crack and so on.
Remind you to buy before the manual hoist must check the packaging, production date, gourd material degree and product shelf life and so on. The contract must be signed by both parties save. Here's how to select the right chain hoists, for your reference:
1, in normal use, the hand chain hoists chain will be stuck.
2, the normal use chain hoists lifting heavy objects will appear downturn.
3, the use of chain hoists lifting heavy objects can not only occur when the next situation.
4, when the upper and lower hook plates,lever hoist severe deformation does not work, can not guarantee things will not be hanging slip hook.
5, in the safe use of load chain hoists, chains, hooks and other load bearing parts may deform or crack and so on.
2013年8月19日星期一
Synchronous lifting hoist Precautions
Synchronous electric chain hoist lifting Precautions:
Under normal circumstances people are choosing to use alternative electric chain hoist manual hoist s hoisting construction groups in the new tank, large oil tank welding, etc., can greatly reduce the labor intensity of construction workers and improve working efficiency. However, the construction of the tank lifting hoist how to avoid overloading operation is to improve the efficiency and safety of the key, but also need to attach great importance to the construction team for each question.
First, the overall weight of the tank must be calculated correctly, generally selected from the hoist that the total weight of the overall weight of the tank 1.3 to 1.5 times. After determining the number of units of electric hoist, to accurately calculate and determine the spacing of hanging points, each lifting point spacing must be equal and balanced distribution. Requirements for the first time since the construction process less open sunroof, so for the first time hanging point to as little as possible, except for the first hanging point requires consistent spacing, but also consider the balanced lifting points after setting, in order to maintain equal spacing of each single lifting point, as far as possible electric chain block s are set to run to create the conditions.
Based on past experience in construction, for the first time hanging point is generally selected hoist half the number of units, the second hoisting construction has been completed, that is, in a timely manner before the third layer lifting up into the rest of all lifting points uprights, hang entire electric hoist, all put into the third layer lifting operation. In improving operations, up to the experienced professional rigger professional rigger is responsible for on-site commander.
Despite the selected hoist safety factors have been taken into account, but because HHS-10t low-speed electric chain hoist is used in disc brake three-phase asynchronous motors, brake asynchronous motor characteristics, so that different motor speed is inevitable exist some differences, which determines the electric hoist speed can not be completely synchronous operation, especially with the overall lifting of continuous operation time longer, increase the speed difference accumulation, making the hoist between the actual load changes Some electric hoist lifting slowly bearing constantly reduced, or even no bearing; while some electric hoist Since l fast, carrying increasing, hoist the possibility of running in the event of overload continues to increase, in this case if the viewer is not note that the individual is likely to occur hoist equipment overload operation. Which in turn increase to the overall construction hoisting lifting of the moment, with construction experience first hand down the perceived tightness of the chain hoist, move the adjustment loose or tight single hoist up or down until the chain tightness basically the same before the official start upgrading; during normal upgrade process, you want to send someone constantly monitors the functioning of electric hoist, electric hoist visually observed whether the shutdown and the tightness of the chain; motors and hoists with ears whether there is abnormal operation sound, if unusual, timely stop, identify the cause and adjust the chain tension, electric hoist for failure to timely replacement and maintenance. Erection occurs during the trip, burning fuse the situation, the more you want to inspect the hoist load, adjust the chain tension and so on.
Also, according to each lifting height and construction schedule, appropriate adjustments to the number of checks intermediate stop. Normal run-time jobs each intermediate stop to check 2 or 3 times, if it is appropriate to increase the down-storey increase the frequency of inspections;wire rope winch near the end capping layers, not only to increase the number of intermediate stop to check, but also to strengthen the monitoring operation of hoist situation, because with the increase of the total load, electric hoist overload occurs also increases the chance of running.
Under normal circumstances people are choosing to use alternative electric chain hoist manual hoist s hoisting construction groups in the new tank, large oil tank welding, etc., can greatly reduce the labor intensity of construction workers and improve working efficiency. However, the construction of the tank lifting hoist how to avoid overloading operation is to improve the efficiency and safety of the key, but also need to attach great importance to the construction team for each question.
First, the overall weight of the tank must be calculated correctly, generally selected from the hoist that the total weight of the overall weight of the tank 1.3 to 1.5 times. After determining the number of units of electric hoist, to accurately calculate and determine the spacing of hanging points, each lifting point spacing must be equal and balanced distribution. Requirements for the first time since the construction process less open sunroof, so for the first time hanging point to as little as possible, except for the first hanging point requires consistent spacing, but also consider the balanced lifting points after setting, in order to maintain equal spacing of each single lifting point, as far as possible electric chain block s are set to run to create the conditions.
Based on past experience in construction, for the first time hanging point is generally selected hoist half the number of units, the second hoisting construction has been completed, that is, in a timely manner before the third layer lifting up into the rest of all lifting points uprights, hang entire electric hoist, all put into the third layer lifting operation. In improving operations, up to the experienced professional rigger professional rigger is responsible for on-site commander.
Despite the selected hoist safety factors have been taken into account, but because HHS-10t low-speed electric chain hoist is used in disc brake three-phase asynchronous motors, brake asynchronous motor characteristics, so that different motor speed is inevitable exist some differences, which determines the electric hoist speed can not be completely synchronous operation, especially with the overall lifting of continuous operation time longer, increase the speed difference accumulation, making the hoist between the actual load changes Some electric hoist lifting slowly bearing constantly reduced, or even no bearing; while some electric hoist Since l fast, carrying increasing, hoist the possibility of running in the event of overload continues to increase, in this case if the viewer is not note that the individual is likely to occur hoist equipment overload operation. Which in turn increase to the overall construction hoisting lifting of the moment, with construction experience first hand down the perceived tightness of the chain hoist, move the adjustment loose or tight single hoist up or down until the chain tightness basically the same before the official start upgrading; during normal upgrade process, you want to send someone constantly monitors the functioning of electric hoist, electric hoist visually observed whether the shutdown and the tightness of the chain; motors and hoists with ears whether there is abnormal operation sound, if unusual, timely stop, identify the cause and adjust the chain tension, electric hoist for failure to timely replacement and maintenance. Erection occurs during the trip, burning fuse the situation, the more you want to inspect the hoist load, adjust the chain tension and so on.
Also, according to each lifting height and construction schedule, appropriate adjustments to the number of checks intermediate stop. Normal run-time jobs each intermediate stop to check 2 or 3 times, if it is appropriate to increase the down-storey increase the frequency of inspections;wire rope winch near the end capping layers, not only to increase the number of intermediate stop to check, but also to strengthen the monitoring operation of hoist situation, because with the increase of the total load, electric hoist overload occurs also increases the chance of running.
Overhaul of the basic requirements for construction machinery
1. Overhaul of the technical evaluation before
Currently, the project is to restore the machine some more performance overhaul repair of the machine after a longer period of time after the operation, the major components and assemblies of aging have reached the limit, it should all be the disintegration of the machine, cleaning, inspection and repair, achieve its performance standard at the factory.
Construction machinery overhaul is necessary before technical appraisal techniques used by the person in charge of the unit, management, maintenance and driving personnel to participate, the various components of the machine are not pre-dissolution pressure, flow, temperature and torque and other performance testing, and reviewed technical and operational records and other data files, a detailed assessment of the consumption of fuel and lubricants,hoist and trolley and make a detailed record. Then the original information provided by the manufacturer overhaul parameters be compared in order to determine whether repairs are needed.
Determine whether mechanical engineering major overhaul and technical conditions are:
⑴ engine performance indicators fell more than 20%; oil consumption exceeds the fixed value of one times; engine cylinder pressure when the temperature reaches above 45 ℃ when measured less than the required 60% of the index.
⑵ transmission main parts wear reaches the limit level, there is yaw, abnormal noise, shock and jitter phenomena.
⑶ steering worn gap is too large, manipulation failure; transmission gear and shaft wear serious, difficult or often jump shift gear; severely worn brake mechanism, braking performance degradation or failure and can not be adjusted.
(2) repair method of choice
Construction machinery into the plant overhaul,chain block the response to the disintegration of the parts are grouped, measurement, inspection and appraisal, and the assembly of the various components and the engine cylinder, crankshaft, etc. abrasion testing, in order to obtain a basis for whether to replace. Generally wear large moving parts need to be replaced; inconvenience for some replacement parts, should adopt welding, thermal spray, brush plating and chrome and other technology to restore its original design dimensions. Not guarantee the quality, the need to replace parts shall be in accordance with the requirements of the original manufacturer or designated collaborative purchase of spare parts manufacturers.
Repair method is divided into: repair and replacement assembly for motor repairs. The car repair method, that is, during the repair parts are sequentially removed from the machine, after washing, detection, classification, and repair or replacement, and finally reassembled in order to achieve the recovery performance of the repair methods. Law on car repair repair downtime longer occupied.
Replace assembly repair method, is in the repair process, in addition to the original rack renovations, the only remaining assembly is damaged or accessories all removed, replaced with pre-prepared (or repair) good assembly or accessories , and then assembled into machine repair methods. This method can significantly reduce downtime repair time, help to improve repairman efficiency, reduce costs and ensure the quality of maintenance. This is also the most popular American maintenance system maintenance methods, which increase the use of machinery and equipment intact rate units, utilization and production efficiency of great significance.
3 Cautions
⑴ taken to exclude security risks. Overhaul process should be taken to exclude security risks, such as: adjusting brake clearance, replace worn clutch friction plate and the cab seat can be easily adjusted up or down, and the removal of some of the drivers and maintenance personnel likely to cause injury and machine failure security risks. Enhance driver awareness of labor protection, making the machine dangerous experiments, sufficient space should be left around and protective facilities (such as: electric wire rope hoist maximum load operation during the experiment wounding accident prone disintegration).
⑵ do overhauled tracking service. Build construction machinery overhaul maintenance files, and the unit should be repaired within a certain period after repair works to ensure mechanical energy to achieve the specified performance and good condition. During this period, such as general failure occurred, after adjustment to get rid of those who should be using the units themselves. Eg due to larger changes. Mechanical damage, severe oil spills, leaks, leakage and leakage and other major components must be disassembled for repair, the unit should be serviced by a joint notification repair unit inspection, timely repair to reduce downtime,manual hoist so after Overhaul the machine can be kept in good working condition.
Currently, the project is to restore the machine some more performance overhaul repair of the machine after a longer period of time after the operation, the major components and assemblies of aging have reached the limit, it should all be the disintegration of the machine, cleaning, inspection and repair, achieve its performance standard at the factory.
Construction machinery overhaul is necessary before technical appraisal techniques used by the person in charge of the unit, management, maintenance and driving personnel to participate, the various components of the machine are not pre-dissolution pressure, flow, temperature and torque and other performance testing, and reviewed technical and operational records and other data files, a detailed assessment of the consumption of fuel and lubricants,hoist and trolley and make a detailed record. Then the original information provided by the manufacturer overhaul parameters be compared in order to determine whether repairs are needed.
Determine whether mechanical engineering major overhaul and technical conditions are:
⑴ engine performance indicators fell more than 20%; oil consumption exceeds the fixed value of one times; engine cylinder pressure when the temperature reaches above 45 ℃ when measured less than the required 60% of the index.
⑵ transmission main parts wear reaches the limit level, there is yaw, abnormal noise, shock and jitter phenomena.
⑶ steering worn gap is too large, manipulation failure; transmission gear and shaft wear serious, difficult or often jump shift gear; severely worn brake mechanism, braking performance degradation or failure and can not be adjusted.
(2) repair method of choice
Construction machinery into the plant overhaul,chain block the response to the disintegration of the parts are grouped, measurement, inspection and appraisal, and the assembly of the various components and the engine cylinder, crankshaft, etc. abrasion testing, in order to obtain a basis for whether to replace. Generally wear large moving parts need to be replaced; inconvenience for some replacement parts, should adopt welding, thermal spray, brush plating and chrome and other technology to restore its original design dimensions. Not guarantee the quality, the need to replace parts shall be in accordance with the requirements of the original manufacturer or designated collaborative purchase of spare parts manufacturers.
Repair method is divided into: repair and replacement assembly for motor repairs. The car repair method, that is, during the repair parts are sequentially removed from the machine, after washing, detection, classification, and repair or replacement, and finally reassembled in order to achieve the recovery performance of the repair methods. Law on car repair repair downtime longer occupied.
Replace assembly repair method, is in the repair process, in addition to the original rack renovations, the only remaining assembly is damaged or accessories all removed, replaced with pre-prepared (or repair) good assembly or accessories , and then assembled into machine repair methods. This method can significantly reduce downtime repair time, help to improve repairman efficiency, reduce costs and ensure the quality of maintenance. This is also the most popular American maintenance system maintenance methods, which increase the use of machinery and equipment intact rate units, utilization and production efficiency of great significance.
3 Cautions
⑴ taken to exclude security risks. Overhaul process should be taken to exclude security risks, such as: adjusting brake clearance, replace worn clutch friction plate and the cab seat can be easily adjusted up or down, and the removal of some of the drivers and maintenance personnel likely to cause injury and machine failure security risks. Enhance driver awareness of labor protection, making the machine dangerous experiments, sufficient space should be left around and protective facilities (such as: electric wire rope hoist maximum load operation during the experiment wounding accident prone disintegration).
⑵ do overhauled tracking service. Build construction machinery overhaul maintenance files, and the unit should be repaired within a certain period after repair works to ensure mechanical energy to achieve the specified performance and good condition. During this period, such as general failure occurred, after adjustment to get rid of those who should be using the units themselves. Eg due to larger changes. Mechanical damage, severe oil spills, leaks, leakage and leakage and other major components must be disassembled for repair, the unit should be serviced by a joint notification repair unit inspection, timely repair to reduce downtime,manual hoist so after Overhaul the machine can be kept in good working condition.
Fracture Analysis sling occur
Lifting sling is lifting, handling operations an important auxiliary tool, which includes wire slings, straps, hooks, steel clamp and so on. Sling with a wide variety of complex use of the environment, the use of large and uneven quality of personnel, risk factors,hoist and trolley and more, great harm. If used improperly or mismanagement, prone to accidents.
For some companies in recent years fracture accident occurred in a sling, combined with years of safety management practice, sling rupture causes a careful analysis, and proposed preventive measures to ensure the safe use of a sling.
1. Sling manufacturing irregularities
Currently, companies use the sling into professional factory production and business homemade two parts. Sling professional manufacturer of the product quality, but off is the cause of the accident is an important reason. Some sling manufacturers do not follow the national standard production and testing products. Such as: 1999 factory bought 8 rated load 10 tons of Circular Welded chain, which has a sudden break in use. After examination, the chain breaks open welding seam obvious, belonging to neither certification nor the inspection mark and quality grade mark of the "three no" products.
Some companies buy sling out, it is also full use of their existing equipment and human resources, their processing and the production of some number of single process is simple sling. Enterprise homemade sling, its randomness and blindness larger in the selection, to determine the size and production methods, often depending on their experience,chain block manufacturing quality and safety performance is difficult to achieve the requirements. Such as: a workshop in 2000 forged a two tons of small hooks, With no national standard DG series steel (using ordinary 45 # steel) manufacture, in use, the hook was straightened, hanging objects falling, almost led to casualties.
2. Sling using the low quality of personnel security technology, poor safety awareness
Sling using technical quality and safety of personnel security awareness is not strong, not only affects the quality of the lifting operation, but also directly related to the user's personal safety. Its performance are the following, first, use of personnel safety consciousness. In the production process, some sling use of personnel emphasis on production safety, to grab the progress, time duration, simplify operating procedures, or even illegal dangerous operations and stuffed hair accidents. Second, some of the safety technology used low quality, they do not understand the basic performance sling and use requirements, but do not know how to calculate the center of gravity and determining hanging objects hanging method, so that in the specific operation, arbitrary, can lifting safety can not be guaranteed, then completely rely on hit "Grand Canal."
3. Sling has not been included in the safety management of normal channels, extensive management
Currently, sling safety management, the State has not developed a standardized management standards, companies are lack of appropriate safety management system, resulting in a sling safety management in a loose state. On the use of units (enterprises) in terms of a sling into use, by what sector management, long test time and by whom checks,lever hoist to what standard to be repaired or scrapped, which are impossible to implement. Resulting not timely detect and eliminate hidden dangers exist sling, sling so that part of the long-term "sick running" until an accident. Furthermore, the production plant or process is concerned, no one managed to implement fixed, fixed storage. Who is who take, littering after use, which makes the sling greatly increased chance of breakage.
In addition, lifting the driver to improper operation, lifting up the stopper is caused sling failures and other fracture is an important reason.
For some companies in recent years fracture accident occurred in a sling, combined with years of safety management practice, sling rupture causes a careful analysis, and proposed preventive measures to ensure the safe use of a sling.
1. Sling manufacturing irregularities
Currently, companies use the sling into professional factory production and business homemade two parts. Sling professional manufacturer of the product quality, but off is the cause of the accident is an important reason. Some sling manufacturers do not follow the national standard production and testing products. Such as: 1999 factory bought 8 rated load 10 tons of Circular Welded chain, which has a sudden break in use. After examination, the chain breaks open welding seam obvious, belonging to neither certification nor the inspection mark and quality grade mark of the "three no" products.
Some companies buy sling out, it is also full use of their existing equipment and human resources, their processing and the production of some number of single process is simple sling. Enterprise homemade sling, its randomness and blindness larger in the selection, to determine the size and production methods, often depending on their experience,chain block manufacturing quality and safety performance is difficult to achieve the requirements. Such as: a workshop in 2000 forged a two tons of small hooks, With no national standard DG series steel (using ordinary 45 # steel) manufacture, in use, the hook was straightened, hanging objects falling, almost led to casualties.
2. Sling using the low quality of personnel security technology, poor safety awareness
Sling using technical quality and safety of personnel security awareness is not strong, not only affects the quality of the lifting operation, but also directly related to the user's personal safety. Its performance are the following, first, use of personnel safety consciousness. In the production process, some sling use of personnel emphasis on production safety, to grab the progress, time duration, simplify operating procedures, or even illegal dangerous operations and stuffed hair accidents. Second, some of the safety technology used low quality, they do not understand the basic performance sling and use requirements, but do not know how to calculate the center of gravity and determining hanging objects hanging method, so that in the specific operation, arbitrary, can lifting safety can not be guaranteed, then completely rely on hit "Grand Canal."
3. Sling has not been included in the safety management of normal channels, extensive management
Currently, sling safety management, the State has not developed a standardized management standards, companies are lack of appropriate safety management system, resulting in a sling safety management in a loose state. On the use of units (enterprises) in terms of a sling into use, by what sector management, long test time and by whom checks,lever hoist to what standard to be repaired or scrapped, which are impossible to implement. Resulting not timely detect and eliminate hidden dangers exist sling, sling so that part of the long-term "sick running" until an accident. Furthermore, the production plant or process is concerned, no one managed to implement fixed, fixed storage. Who is who take, littering after use, which makes the sling greatly increased chance of breakage.
In addition, lifting the driver to improper operation, lifting up the stopper is caused sling failures and other fracture is an important reason.
2013年8月16日星期五
Electric chain hoist is installed correctly process and notes
Install electric
chain block is allowed to work correctly the first step,
First, install chain hoist must first install the chain box;
Second, connect the power cord: Connect the power cord must be cut off in advance. Meanwhile ground should be well grounded, otherwise the operator touches any part of the chain hoist or when you are likely to feel a shock feeling.
Third, lubricate chain hoist load chain: the chain lubrication level is a load chain life is an important factor. Timely and effective lubrication of the load chain, in order to ensure the effective life of the chain.
Fourth, check the chain arrangement: For multi-line chain, electric manual hoist , the hook should ensure that the next frame will not be overturned. If you flip it back to its normal state, to ensure the chain of weld arranged in rows. Finally, check the operating voltage: Because electric chain hoist factory, is based on a user-specified voltage or high voltage equipment, check the wiring and make sure the power supply voltage requirements are met.
Tips: Installing electric chain lift hoist if the improper voltage operation, may cause electric chain hoist causing serious damage.
First, install chain hoist must first install the chain box;
Second, connect the power cord: Connect the power cord must be cut off in advance. Meanwhile ground should be well grounded, otherwise the operator touches any part of the chain hoist or when you are likely to feel a shock feeling.
Third, lubricate chain hoist load chain: the chain lubrication level is a load chain life is an important factor. Timely and effective lubrication of the load chain, in order to ensure the effective life of the chain.
Fourth, check the chain arrangement: For multi-line chain, electric manual hoist , the hook should ensure that the next frame will not be overturned. If you flip it back to its normal state, to ensure the chain of weld arranged in rows. Finally, check the operating voltage: Because electric chain hoist factory, is based on a user-specified voltage or high voltage equipment, check the wiring and make sure the power supply voltage requirements are met.
Tips: Installing electric chain lift hoist if the improper voltage operation, may cause electric chain hoist causing serious damage.
Barriers to movement across the hoist way
About electric
rope hoist lifting and durable method
Electric hoist lifting hanging objects and run when improper methods. Electric hoist then make hanging objects swing accidents. Electric hoist lifting hanging objects, when the wire rope or chain tension should be parking, electric hoist according to the direction of the hook again to identify the hook shake while lifting workers should check whether hanging objects hanging in prison; electric hoist lifting is not too Meng, hanging objects from the obstacle when accelerating until after lifting speed;chain block electric hoist hanging objects runtime. Under the conditions allowed by the rigger hoist hanging objects in the rear help steady object and under the command of the rigger run around obstacles. Do not run electric hoist intermittent, long-distance running, it is best to send electricity long run as well.
Features: Small size, light weight, easy operation, the chain is more resilient, and more rugged wear at work to ensure the safety. And the chain hoist is equipped with a chain bag, so that looks clean and tidy electric hoist, chain bag is also equipped with anti-rust oil,wire rope winch so when the electric chain hoist when not in use on the chain bag will not rust, extend the life of electric hoist.
Electric hoist lifting hanging objects and run when improper methods. Electric hoist then make hanging objects swing accidents. Electric hoist lifting hanging objects, when the wire rope or chain tension should be parking, electric hoist according to the direction of the hook again to identify the hook shake while lifting workers should check whether hanging objects hanging in prison; electric hoist lifting is not too Meng, hanging objects from the obstacle when accelerating until after lifting speed;chain block electric hoist hanging objects runtime. Under the conditions allowed by the rigger hoist hanging objects in the rear help steady object and under the command of the rigger run around obstacles. Do not run electric hoist intermittent, long-distance running, it is best to send electricity long run as well.
Features: Small size, light weight, easy operation, the chain is more resilient, and more rugged wear at work to ensure the safety. And the chain hoist is equipped with a chain bag, so that looks clean and tidy electric hoist, chain bag is also equipped with anti-rust oil,wire rope winch so when the electric chain hoist when not in use on the chain bag will not rust, extend the life of electric hoist.
2013年8月14日星期三
Using block and tackle and groups which inject public matters?
A pulley and pulley block used, they should pay attention to the following aspects:
(A) from the weight of the hoist equipment generally marked on the nameplate in tackles jacket, non-overload. Pulley for lifting weight is unknown should not be used.
(2) multi-block from the weight of the door, is worried by the door cars are fine, and if only one part of the pulley, lifting capacity corresponding decline proportionately. If 50t5 door pulley, when only three when lifting weight of 30t,
(3) should always check the pulleys, hooks, rings of rotation is flexible, loose screws and pulley groove axis, plywood, clapboard and a hook and other parts for cracks or other damage, once problems are strictly prohibited .
(4) wear around good rope pulley,lever hoist you should tighten the rope slowly afterburner trial hanging, hanging in the trial to check the work of tackles, with or without Kasheng, grinding rope, off the ropes and rope friction between places, found between title should be timely adjusted.
(5) selection of tackle, to consider the pulley diameter, round bottom width, and the ratio between the rope diameter. General rope diameter pulley diameter should be 16 ^ -20 times the width should be larger than the bottom rope diameter 1-5mm,
(6) large changes in force or high-altitude operations, should not be used hook block, pulley rings should be used to prevent accidents caused by decoupling.
(7) when lifting heavy equipment,hoist and trolley should be preferred pair ran head along worn.
(8) is lifting weights rose to the highest point, the total length of rope around the drum is less than the capacity of towing equipment. And given the distance between the pulley and the movable pulley should be more than safe distance while the rope rope groove angle is not greater than 40-60,
(9) Put pulley to keep the clean,chain block lubricate moving parts regularly. After each operation, you should tackle cleaned, stored in dry warehouse shelves, to prevent corrosion.
(A) from the weight of the hoist equipment generally marked on the nameplate in tackles jacket, non-overload. Pulley for lifting weight is unknown should not be used.
(2) multi-block from the weight of the door, is worried by the door cars are fine, and if only one part of the pulley, lifting capacity corresponding decline proportionately. If 50t5 door pulley, when only three when lifting weight of 30t,
(3) should always check the pulleys, hooks, rings of rotation is flexible, loose screws and pulley groove axis, plywood, clapboard and a hook and other parts for cracks or other damage, once problems are strictly prohibited .
(4) wear around good rope pulley,lever hoist you should tighten the rope slowly afterburner trial hanging, hanging in the trial to check the work of tackles, with or without Kasheng, grinding rope, off the ropes and rope friction between places, found between title should be timely adjusted.
(5) selection of tackle, to consider the pulley diameter, round bottom width, and the ratio between the rope diameter. General rope diameter pulley diameter should be 16 ^ -20 times the width should be larger than the bottom rope diameter 1-5mm,
(6) large changes in force or high-altitude operations, should not be used hook block, pulley rings should be used to prevent accidents caused by decoupling.
(7) when lifting heavy equipment,hoist and trolley should be preferred pair ran head along worn.
(8) is lifting weights rose to the highest point, the total length of rope around the drum is less than the capacity of towing equipment. And given the distance between the pulley and the movable pulley should be more than safe distance while the rope rope groove angle is not greater than 40-60,
(9) Put pulley to keep the clean,chain block lubricate moving parts regularly. After each operation, you should tackle cleaned, stored in dry warehouse shelves, to prevent corrosion.
2013年8月12日星期一
Rust chain hoists
When using chain block inevitable rain and other inclement weather, making the chain hoist is easy to rust, rusted chain so that the chain pull is not smooth, the emergence of a variety of small problems one after another, causing distress to our work, seriously affecting the efficiency, also affect the whole life of the device chain hoists.
Acidic due to rain, in the rain when the chain lift hoist long after use, should be a key part with a dry cloth or with a hair dryer, to avoid corrosion paint off hoists; then coated with anti-rust oil opponents pull hoist, placed in a dry environment.
In order to play better performance chain Block is recommended to reduce the frequency of use in the rain, if not avoided, then pay attention to maintenance after use.
Chain hoists chain performance:
Chain hoists chain hoists have a direct impact on the overall performance! Import chain hoists cast alloy steel lifting chain, lifting chain hoists lifting chain than domestically strong tensile, wear strong. And lifting chain hoists are rust after treatment, can enhance the life of manual hoist . Import chain hoists, small size, internal compact, lightweight chain, and chain hoists chain hoists lifting faster than domestic stability, improved domestic chain hoists discontinuity shortcomings.
Material is aluminum bronze and bronze chain hoists Explosion levels
Explosion-proof electric Wire rope hoist lifting equipment is not the only, and explosion-proof chain hoists, the same product in the job it is friction between the impact will not occur mechanical sparks to effectively prevent fire accidents, ensure that the national wealth and personal safety, but also machinery and mechanical maintenance of essential special tools.
Explosion-proof hoist and hoist the main difference is that ordinary proof chain hoists material is aluminum bronze and beryllium as the blank, chain hoists shell is also used in H62 copper alloy materials. Why use this information as proof chain hoists raw materials, mainly bronze alloy, aluminum bronze alloy does not occur when impact or friction sparks, it is very suitable for the manufacture of flammable, explosive, corrosive place under magnetic and safe to use. Mainly alloy containing 30% oxygen or 6.5-10% methane empty oxygen withstand 561LJ impact energy, the impact of 20 magnetic, neither of sparks and burning.
Explosion-proof grade is proof chain block level is d Ⅱ AT2 to d Ⅱ AT4, d represents flameproof; II on behalf of Class II proof that Plant Explosion. C stands for C-level hazardous areas, that is, for the most dangerous region, T4 temperature class representatives, from T1-T6, T6 is to achieve the highest.
The force of friction parts chain hoists including chain hoists lifting round form, siding, bracelet wheel, hooks, gears, gear shafts are made of aluminum bronze and bronze alloy made of data, proof manual hoist s can be widely applied the petroleum, petrochemical, gas stations, oil depots, gas, chemical, military, power, mining, electronics, railways, and other potential fire and explosion hazard environments.
High-strength foot chain hoists hook hook material
Chain Block gear: innovation symmetry speed synchronous gear; international standard gear steel abrasion resistance than ordinary double gourd, a more stable rotation, hand-pull lighter. Chain hoists chain: chain of higher intensity; counterparts at the welding fine, after induction hardened meet ISO3007-1984 international standard chain of technical requirements; adapt to sudden overload work; hand zipper feel better; alter normal
manual hoist only vertical down, from multiple directions, was 45 ° angle of pull, adapt wider. Chain hoists hook: high-strength foot hook material, advanced alloys, so that the work does not bear the overload fracture, but the gradual deformation, higher safety factor; hook at the new design, so that the goods will not be decoupled.
Chain hoist limit switch: limit switch hanging under the hanging parts, textile chain out to ensure safety.
Chain hoists parts: the main components are made of high quality alloy steel, the implementation of strict size, weight checks, to ensure full performance of each component. Chain hoists body: slim design, innovative and generous appearance; ergonomic, light body work activities interface is small, adaptation to the environment. Chain lift hoist spray: advanced spray treatment process, both inside and outside hanging plastic, used for longer list are new as ever. Chain hoists Housing: pressed steel casing, sturdiness in significantly lighter.
Chain hoist limit switch: limit switch hanging under the hanging parts, textile chain out to ensure safety.
Chain hoists parts: the main components are made of high quality alloy steel, the implementation of strict size, weight checks, to ensure full performance of each component. Chain hoists body: slim design, innovative and generous appearance; ergonomic, light body work activities interface is small, adaptation to the environment. Chain lift hoist spray: advanced spray treatment process, both inside and outside hanging plastic, used for longer list are new as ever. Chain hoists Housing: pressed steel casing, sturdiness in significantly lighter.
2013年8月7日星期三
How to remove chain hoists bearings
Chain hoists are installed equipment, cargo lifting, stationary objects, lashing and traction ideal tool for a variety of functions.
manual hoist brought us convenience, but there are problems in the course is also more common to introduce you to the following chain hoists in case of bearing damage, how to remove?
1, with a round stick insert hands pulling hoist bearing bore inside the nose, the nose chain block and chain hoists inner bearing chock appropriated missing out after disagreements groove direction bearing chain hoists, chain hoists renewal check the chain hoists bearings or bearing is damaged;
2 Loosen the inner bearing chain lift hoist head bolts, will head chain hoists chain hoists inner bearing housings together with the removed;
3, loosen the chain hoists hex screws on the bearing points, if the chain hoists with eccentric bearing, then loosen the socket head cap screws, the chain hoists head against the direction of rotation axis eccentric to play loose.
1, with a round stick insert hands pulling hoist bearing bore inside the nose, the nose chain block and chain hoists inner bearing chock appropriated missing out after disagreements groove direction bearing chain hoists, chain hoists renewal check the chain hoists bearings or bearing is damaged;
2 Loosen the inner bearing chain lift hoist head bolts, will head chain hoists chain hoists inner bearing housings together with the removed;
3, loosen the chain hoists hex screws on the bearing points, if the chain hoists with eccentric bearing, then loosen the socket head cap screws, the chain hoists head against the direction of rotation axis eccentric to play loose.
Chain hoists key operation during use
Relative to the electric Wire rope hoist is still relatively easy to operate, but to be safe, or pay attention to the relevant operating point.
Chain hoist wire rope hoist hooks and fixtures will be securely fixed, the chain was hanging heavy hook and reliably linked together. manual hoist lifting a weight. Pull the knob to position cards "on" and then flip the lever back and forth, back and forth with the handle pulled, the weight will steadily rise. Chain hoists heavy decline. Sign on the knob to "down" position, and then reciprocating lever handle, heavy as they pulled the handle and steady decline.
Chain Block hook position adjustment. No load to pull the knob on the indicator "0", and then turn the handwheel to adjust the chain hook the upper and lower positions. Ratchet pawl is disengaged, so that the chain is pulled by hand easily and quickly adjust the position of the chain hook.
2013年8月5日星期一
Cleaning chain hoists should pay attention to what?
After a long period of use
Chain Block , unavoidable will accumulate a lot of dust, no time cleaning chain hoists will affect the use of equipment and life, but as a lifting device, it has a lot of cleaning work areas requiring attention, treatment is not good will appear rust, etc., the following cleaning
manual hoist to introduce you to pay attention to what?
Chain hoists, especially inside the device is easy to fall into the dust, if not cleaned, it will affect the use of equipment, if you use water to wash, rinse improper chain hoists will rust, but do not rinse with water and dirt can not completely get rid of dust and dirt, in fact, the solution is simple,
Just use Chit machine and other auxiliary to complete the cleaning job you can, while you can use Blaster facing the chain lift hoist to handle internal dust Blaster larger the wind, can effectively flush out the dust inside, but some grease or other can be washed with water, and then use Blaster completely dry.
Chain hoists, especially inside the device is easy to fall into the dust, if not cleaned, it will affect the use of equipment, if you use water to wash, rinse improper chain hoists will rust, but do not rinse with water and dirt can not completely get rid of dust and dirt, in fact, the solution is simple,
Just use Chit machine and other auxiliary to complete the cleaning job you can, while you can use Blaster facing the chain lift hoist to handle internal dust Blaster larger the wind, can effectively flush out the dust inside, but some grease or other can be washed with water, and then use Blaster completely dry.
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